{"cve":"CVE-2009-2052","nvd":{"published":"2009-08-27T17:00:01.000","modified":"2026-06-16T23:08:39.843","status":"Modified","description":"Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 4.x, 5.x before 5.1(3g), 6.x before 6.1(4), 7.0 before 7.0(2), and 7.1 before 7.1(2); and Cisco Unified Presence 1.x, 6.x before 6.0(6), and 7.x before 7.0(4); allows remote attackers to cause a denial of service (TCP services outage) via a large number of TCP connections, related to \"tracking of network connections,\" aka Bug IDs CSCsq22534 and CSCsw52371.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://secunia.com/advisories/36498","http://secunia.com/advisories/36499","http://secunia.com/advisories/37039","http://securitytracker.com/id?1023018","http://www.cisco.com/en/US/products/products_security_advisory09186a0080af2d11.shtml"],"products":["cisco:unified_communications_manager"],"source":"nvd","synced_at":"2026-10-19T19:54:26.868835795+00:00"},"epss":{"cve":"CVE-2009-2052","score":0.03975,"percentile":0.90481,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}